What role do transitions play in writing?

Transitions serve a vital function in writing by connecting ideas and ensuring that the text flows smoothly. They act as bridges between sentences and paragraphs, helping to guide the reader through the writer's argument or narrative. By using transitions, a writer can clearly indicate relationships between different thoughts, clarify the progression of ideas, and enhance the overall coherence of the piece. This improves the reader's understanding and engagement, making it easier for them to follow the writer's line of reasoning or storytelling.

While highlighting key points, providing examples, and summarizing sections are important aspects of writing, transitions specifically focus on the relationships between ideas, which is what makes option B the most accurate choice.